Eobeet l



(No Model.)

B. L. FOSBURGH.

EARTH AUGEB.

I No. 322,365. f

' Patented July 14,1885.

UNITED STATES PATENT OFFICE.

ROBERT L. FOSBURGH, OF ST. LOUIS, MISSOURI, ASSIGNOR TO JOSEPH W. BRANGH OF SAME PLACE.

EARTH-AUGER.

SPECIFICATION forming part of Letters Patent No. 322,365, dated July 14, 1885. v Application filed March 2, 1885. (N 0 model.)

To all whom it may concern:

Be it known that 1, ROBERT L. FOSBURGH, of the city of St. Louis, State of Missouri, have made a certain new and useful Improvement in Earth-Augers, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, in which- Figure l is a side view of my improved auger-blade; Fig. 2, a similar view of same, turned a quarter; Fig. 3, a top view of the blank from which the blade is formed; Fig. 4, a horizontal section on line 4 4 of Fig. 1; Fig. 5, a detail section showing manner of attaching blade to auger-shaft.

This improvement relates particularly to the construction of thecutting-edge part of the blade and to the peculiar manner of fastening blade to auger-shaft. The construction of my invention is as follows: In my blade, being a metal disk, A, I cut a slot, 0, providing this slot 0 at its inner extremity with an extension, .40. When this slot 0 and its projection as are out into the blade, the result is a part of the bladeis formed into alip,'a. This part of the blade forming the lip on is provided ,with a projection, a, preferably being an extension from the circumference of the blade at that point, as shown in Figs. 3 and 4. This projection a is then turned or bent up upon right angles with the edge of the lip a and at I ;right angles with the face of the blade A, as

shown in Figs. 1, 2, and 4.

Lip a is then bent out of line with the face of blade A, and its edge along the line of slot 0 and the edge of projection a sharpened, and the augerblade is completed. When desirable, the op-' posite side of blade A can be provided with a similar lip, 11, and lip projection, a, made in the same manneras illustrated in the drawings.

The blade A is attached to auger-shaft 0 preferably in the following manner: At its lower end said shaft 0 is provided with a shoulder, c, said shoulder having projecting lugs d d. The center of the lower end-of shaft 0 is threaded to receive a screw. (See Fig. 5.) 4

In the center of blade A a circular hole, 6,, is cut, and on the sides of this circular hole 0 two holes, zz, are. cut. The circular hole e is to receive the screw end fitting into threaded end of shaft 0, and the holes zz are to receive 5 lugs d d of shaft-shoulder c.

The blade A is adjusted to shaft-shoulder 0, so that lugs d d pass into holes 2 2'; then a spiral-feed end piece, k, having a shoulder,- is, to bear up against and support blade A, and a threaded projection, is, is fastened to 5 end of augershaft c by threaded projection k of end piece is being screwed into threaded end of shaft 0, and when end piece, k,is screwed up it holds blade A tightly and snugly in place between shoulders k and 0, blade A 6 being prevented from turning on auger-shaft c by reason of lugs dd.

1 am aware of Letters Patent No. 308,354, of November 25, 1884, to George W. Gilman, and of Letters Patent N 0. 283,283, of August 6; 14, 1883, to Malcolm J. Romine and David P. Lee, andI disclaim the devices claimed and described in said Letters Patent; but

What I desire to claim is- In an earth-auger, the combination of the 7c blade A, having circular opening 0 and holes z z; the shaft 0, having shoulder c, lugs d d, and threaded end, and spiral-feed end piece, k, having shoulder 70 and screw end k, substantially as described. 7 5

In testimony whereof I have affixed my signature, in presenceof two witnesses, this 21st day of February, 1885.

ROBERT nrosBUnGH.

Witnesses I PAUL BAKEWELL, J. L. HoRNsBY. 

